17.6.1.1. Linear and Non-linear Characteristics

Try these first

1. 1.

   What does NMOS stand for?

   Hint

   Think about the charge carriers.

2. 2.

   What is the saturation region in MOSFET?

   Hint

   Consider the behavior when the MOSFET is fully 'on'.

3. 3.

   Which operating region allows the MOSFET to act as a constant current source?

   • Triode
   • Saturation
   • Off

   Hint

   Think about current stability in the circuit.

4. 4.

   True or False: The load line intersects the I-V characteristics to give the operating point.

   • True
   • False

   Hint

   Consider graphical analysis.

5. 5.

   Design a circuit using NMOS that ensures operation in the saturation region when given V_dd = 10V, R_D = 2kΩ and V_th = 2V. Provide analysis of your computations.

   Hint

   Use the saturation condition to find the required input voltage.

6. 6.

   Given a PMOS with Vth of 1.5V, calculate its operating point if V_G is set to 5V. Determine if it lies in the triode or saturation region with R_D = 1kΩ.

   Hint

   Use inequalities to verify the operation region for PMOS.